#page-wrapper {
    margin: auto;
    width: 960px;
}

#navigation-wrapper ul {
    /*display: inline;*/
    padding: 0;
    text-align: center;

    li {
        display: inline-block;
        list-style: none;

        a {
            display: inline-block;
            background-color: blue;
            color: white;
            padding: 3px 15px;
        }
    }
}